<h2>Problem 1</h2>
<div style="color:#666;font-size:80%;">05 October 2001</div><br />
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<p>If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.</p>
<p>Find the sum of all the multiples of 3 or 5 below 1000.</p>

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